xe_tile_assert(9)

💅 xe_tile_assert(9) — a lil' kernel API moment

okay so bestie, we're in the Kernel API Manual today and the star of the show is xe_tile_assert(9). she's giving "debug-mode hall monitor" and honestly? iconic. let's get into it 🎀

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✨ NAME ✨

xe_tile_assert — warn if condition is false when debugging.

like, she literally just checks if something's false and then yells about it. that's the whole vibe check 🦋

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🌸 SYNOPSIS 🌸

xe_tile_assert (tile , condition );

yes the spacing is exactly like that, don't come for me, that's just how she's written 💅

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🫶 ARGUMENTS 🫶

• tile — the struct xe_tile pointer to which condition applies. she's the main character here, the tile in question 🎀
• condition — condition to check. the thing we're all side-eyeing to see if it's true or not 👀

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🔥 DESCRIPTION 🔥

okay so here's the tea: xe_tile_assert uses drm_WARN to emit a warning and print additional information that could be read from the tile pointer — but only if the provided condition is false. so if everything's slaying, nobody hears a peep. if it's not? warning incoming, with receipts printed from the tile pointer 📝

and here's the part where she's not like her cousin drm_WARN, no cap: contrary to drm_WARN, xe_tile_assert is effective only on debug builds — CONFIG_DRM_XE_DEBUG must be enabled. so in a non-debug build she's literally just standing there, doing nothing. silent. a ghost. 💀

also, important: she cannot be used in expressions or as a condition. she's a statement, not a value, so do NOT try to be cute and nest her inside something. she said "I am not an expression, I am a moment" 🙈

bestie please don't forget that last bit — trying to use her in an expression or as a condition is not the move, she's not built for that ✋

for the general usage guidelines, go see Xe Asserts_ — she's got the full lore 🌈

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👑 SEE ALSO 👑

• Kernel file ./drivers/gpu/drm/xe/xe_assert.h — Xe Asserts(9)
• xe_assert(9) — her cousin, also a whole vibe
• xe_gt_assert(9) — the gt-flavoured one, equally slay ⭐

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and that's the page, bestie 🫶 this little gem lives at ./drivers/gpu/drm/xe, dated October 2026, and it's filed under xe_tile_assert(9). periodt. 💖